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Change your PIN code
If your SIM card came with a default PIN code, you can change it to something more secure.
Not all network service providers support this feature.
1. Tap >
> settings.
2. If you have a dual SIM phone, select the SIM you want. Dual SIM is not supported by all
phones. For availability, go to www.microsoft.com/mobile/support/wpfeatures.
3. Tap change SIM PIN.
The PIN code can be 4-8 digits.